I've never seen them in another car or the parts manual. I suspect that there was a clearance issue somewhere and these were applied to overcome. Good news is that it would be relatively easy to add/delete after the car is totally assembled. So, no real harm done if you elect to omit the piece now and discover the brilliance of the application later.
PANTERA INTERNATIONAL
A DE TOMASO CAR CLUB
Presents the De Tomaso Forums
The On-Line Meeting Place for De Tomaso Owners and Enthusiasts From Around the World
Clicking on the banner will take you to the sponsor's website.